Roller Coaster

This is kinda a help thread and kinda not.As some of you know, to help boost smp6 i am making a fun res. (13331)I am looking for somone to make a MASSIVE roller coaster. I am willing to pay big.This roller coaster need to handle people abandoning carts, and be able to auto break and dispense carts. If anyone can make this for me or know of anyone that can, please say.